Effect
No effect on produce quality
No effect on growth
No effect on drought stress tolerance
Kelpak treated Hydrangea, experimental cv. comparable to 'Bobo', grown under periodic drought stress conditions didn't have differences in number of branches (-8.4 %), branch length (+3.2 %), fresh weight (+5.4%), dry weight (+4.8%), root developement (+10.5%), flowers in youngest develomental stage (score 1) (-13.3%), number of flowers in stage 2 (+7.3%), stage 3 (+2.1%), stage 4 (+32.1 %) and fully developed flowers (stage 5) (-28.6%) compared to the untreated control grown under the same conditions.
Trial details
indoor, greenhouse, peat-based substrate, drip-irrigated, repeated drought stress cycles
Belgium
Crop
Hydrangea, Hydrangea paniculata
Trial application
Method
Foliar spray
Timing
First application: 7-10 days after planting; repeated at 14-21 day interval up to 4 applications
Rate
2.5 L/ha
2021
Bio4safe trial report Hydrangea 2021
Crop group
